en_tn/gen/21/14.md

bread

This may have referred to food in general (as in the UDB) or specifically to bread.

a skin of water

"a bag of water." The water container was made out of animal skin.

When the water in the waterskin was gone

This can be translated as "when the water bag was empty"

about the distance of a bowshot away

This refers to the distance that a person could shoot an arrow with a bow. This is about 100 meters.

Let me not look upon the death of the child

"I do not want to watch the boy die"

she lifted up her voice and wept

"she cried out loudly and wept" or "she wept loudly"